Template scrambled when using product options

-- development site development site
-- HikaShop version -- : 2.3.0
-- Joomla version -- : 3.2.3
-- PHP version -- : 5.3.10-1ubuntu3.11

HI,

Just a day before going live, we noticed a very strange behaviour of our site.

We added product characteristics (size and type) to our products. When using these product option by selecting a size and type the template is gettinf scrambled. Or maybe better, going back (partly then) to it's original state.

Please have a look. I'm very curious what's causing this problem.

Best regards

EDIT
I took a longer and closer look to this problem.I moved the charateristics from the right part to the bottom part. What is happening after a changes, the page is being refreshed and the right seems to changs to its original state.

Any suggestions?

Problem solved!

By bringing back the characteristics and add-to-cart button to the right part the template was behaving normal. Noticed another nice feature of HIKA shop: the name of a variant can be added to product name.